function drawChartTreatmentsPerSource() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Acta Biologica Universitatis Daugavpiliensis', 4],
    ['Biodiversity Data Journal', 88],
    ['Entomo Helvetica', 4],
    ['Entomologisches Archiv', 1],
    ['Insecta Mundi', 281],
    ['Insecta mundi', 3],
    ['Linzer biologische Beiträge', 7],
    ['Méquignon-Marvis', 1],
    ['Méquignon-Marvis Père et Fils', 1],
    ['Papéis Avulsos de Zoologia', 14],
    ['The Coleopterists Bulletin', 9],
    ['The Scientific Transactions of the Royal Dublin Society, Series 2', 4],
    ['ZooKeys', 23],
    ['Zoological Systematics', 40],
    ['Zootaxa', 38],
    ['Other (2)', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Journal (n=520)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerSource', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerSource'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerSource);